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Crossfire R9 290x and 4k Monitor

Last response: in Graphics & Displays
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August 6, 2014 3:43:30 PM

Hi guys, this is my first time posting here. I tried to 'google' the subject but I couldnt find anything.

Basically I built a new computer a few months ago, and it was and is working fine. I was using a AOC 24" 1080p monitor left over from my old build until the monitor I got today came into stock.

Im now using the AOC U2868PQU 28" 4K 60Hz, which I ordered from Novatech (great service btw as usual). But anyway getting on with my point I have 2 R9 290x MSI Graphics cards which are in Crossfire mode in Catalyst, however my screen went completely black when testing it in a game, played fine but when i tried to alt tab out screen went black and the computer wasnt responding, i felt the back of my computer (where the display port cable is connected) and felt that the top card was red hot and the bottom card was cool. I then checked temps on the cards and the top card was running at 79 Degrees and the bottom didnt appear to be running at all.

http://prntscr.com/4aa1b1

that is a screenshot showing the temps. Now I just wanted to ask is there anyway to check if the cards are actually crossfired and working together? Because it doesnt appear that the 2nd card is even working atm.

Thanks for the help in advance, and if you need anymore information just let me know, I dont know if i have given all the relevant information needed or not


Wake.

More about : crossfire 290x monitor

a b C Monitor
August 6, 2014 3:45:50 PM

I think r9 290x black screens are quite common tbf, have you enabled crossfire though?
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August 6, 2014 3:51:23 PM

legend001523 said:
I think r9 290x black screens are quite common tbf, have you enabled crossfire though?


I have enabled it through Catalyst, is there anywhere else I need to enable it? I never had this black screen problem until today and it was only once with this new monitor
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a b C Monitor
August 6, 2014 3:53:24 PM

Wake_LiquidRising said:
legend001523 said:
I think r9 290x black screens are quite common tbf, have you enabled crossfire though?


I have enabled it through Catalyst, is there anywhere else I need to enable it? I never had this black screen problem until today and it was only once with this new monitor


AMD crossfire drivers aren;t the best, have you downloaded the latetst drivers?
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August 6, 2014 3:55:09 PM

What game were you playing when the black screen occured? Some games do not have sli/crossfire support. Also, in some games( dead space 3 in particular ) alt tabbing has been very buggg for me. Make sure that the game that you are playing supports crossfire and maybe do a search to make sure that alt-tabbing out of that game isn't a reported issue by anyone else.
Lastly: Make sure that your drivers are all up to date!


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August 6, 2014 3:57:24 PM

LExSLAYER1 said:
What game were you playing when the black screen occured? Some games do not have sli/crossfire support. Also, in some games( dead space 3 in particular ) alt tabbing has been very buggg for me. Make sure that the game that you are playing supports crossfire and maybe do a search to make sure that alt-tabbing out of that game isn't a reported issue by anyone else.
Lastly: Make sure that your drivers are all up to date!




Yeah the drivers are uptodate
I had to uninstall all of them and then reinstall the newest ones to get the monitor to work at 60hz without the flickering that was occurring before. So everything is as updated as it can be. My main concern is that my 2nd card doesnt appear to be being utilised, whereas the other one is running hot, is this normal?
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August 6, 2014 4:05:04 PM

Well for starters, the 290x's run very hot. Especially when you are rendering your games in 4k. If the game that you are playing doesn't support crossfire then that explains why the 2nd card isn't getting hot.
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August 6, 2014 4:08:05 PM

LExSLAYER1 said:
Well for starters, the 290x's run very hot. Especially when you are rendering your games in 4k. If the game that you are playing doesn't support crossfire then that explains why the 2nd card isn't getting hot.


Right okay, the game i was playing was Dota 2 which i dont think does, its not a very resource heavy game anyway, but i started watching some 4k stuff, and the 2nd card kicked in, so i guess thats that!

Thank you
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